Answer:
281.7m
Explanation:
Given: A lifeboat is 55m directly below a rescue plane, constant vertical acceleration of 6.91 , horizontal speed of plane is
To Find: how far is the package from the lifeboat when it hits the waves
Solution: Verticle distance to cover=
The emergency kit descends with acceleration of
Using second equation of motion
initial speed of emergency kit
putting in equation
time taken by kit to hit the wave
distace of kit from lifeboat=horizontal distance travelled by emergency kit
horizontal velocity of kit will be same as that of plane as kit is thrown from plane
horizontal distance travelled by emergency kit
using equation of motion
here
≅
The distance of emergency kit from lifeboat is